{"product_id":"sw-j-frame-model-640-3-hammer-trigger-357-mag-mim-used-j64031","title":"Smith \u0026 Wesson J Frame Model 640-3 Hammer \u0026 Trigger .357 Magnum MIM Used","description":"\u003cp\u003e\u003cstrong\u003eSmith \u0026amp; Wesson J Frame Model 640-3 Hammer \u0026amp; Trigger .357 Magnum MIM — Used (Part# J64031)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis listing is for one used Smith \u0026amp; Wesson J Frame Model 640-3 hammer and trigger assembly chambered for .357 Magnum. These are MIM (Metal Injection Molded) OEM factory parts in used condition, removed from a functioning firearm. The Model 640 Centennial features a concealed internal hammer for snag-free carry.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e⚠️ Compatibility note:\u003c\/strong\u003e This assembly is specifically for the \u003cstrong\u003eModel 640-3\u003c\/strong\u003e. Verify your exact dash number before ordering, as MIM and non-MIM parts are not interchangeable across dash variants.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e⚠️ Professional installation recommended.\u003c\/strong\u003e Disassembly and reassembly of the firearm is required to replace this part. We recommend having a qualified gunsmith perform this work.\u003c\/p\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eDash\u003c\/th\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003cth\u003eCaliber\u003c\/th\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eModel 640 Centennial\u003c\/td\u003e\n\u003ctd\u003e-3\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e.357 Mag \/ .38 Special\u003c\/td\u003e\n\u003ctd\u003eMIM\u003c\/td\u003e\n\u003ctd\u003eConfirmed fit\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNot compatible with Model 640, 640-1, or 640-2. Verify your dash number before ordering. Contact us if unsure.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003ePart Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Smith \u0026amp; Wesson\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e J64031\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Hammer \u0026amp; Trigger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e MIM (Metal Injection Molded)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Size:\u003c\/strong\u003e J Frame\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e .357 Magnum \/ .38 Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Used (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eQuestions? Call or email us — we're happy to help confirm compatibility for your specific revolver.\u003c\/p\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":39445757624378,"sku":"J64031","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/products\/DSC04158.jpg?v=1786068218","url":"https:\/\/usagunsandgear.com\/products\/sw-j-frame-model-640-3-hammer-trigger-357-mag-mim-used-j64031","provider":"USA Guns And Gear","version":"1.0","type":"link"}